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P990+ Technical Service Manual
DESCRIPTION
The Microchip Technology Inc. 24LC04B/08B is a 4K-or 8K-bit Electrically Erasable PROM.
The device is organized as two or four blocks of 256X8 bit memory with a two wire serial interface. Low
voltage design permits operation down to 2.5 volts with standby and active currents of obly 5µA and
1
respectively.
mA
The 24LC04B/08B also has a page-write capability for up to 16 bytes of data. The 24LC04B/08B is
available in the standard 8-pin DIP and both 8-lead and 14-lead surface mount SOIC packages.
BLOCK DIAGRAM
I/O
CONTROL
LOGIC
SDA
SCL
Vcc
Vss
PIN CONFIGURATION
DIP Package
A0
1
A1
2
A2
3
V
SS
4
PC is a trademark of Philips Corporation
WP
MEMORY
CONTROL
LOGIC
8-SOIC Package
8
V
1
A0
SS
WP
7
2
A1
SCL
6
3
A2
5
SDA
V
4
SS
XDEC
8
NC
V
SS
WP
7
A0
6
SCL
A1
5
SDA
NC
A2
V
NC
--30--
HV GENERATOR
EEPROM ARRAY
(2X256X8) OR
(4X256X8)
PAGE LATCHES
YDEC
SENSE AMP
R/W CONTROL
14-SOIC Package
1
14
2
13
3
12
11
4
5
10
6
SS
7
NC
Vcc
WP
NC
SCL
9
SDA
8
NC
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